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Sensors 2016, 16(12), 2161; doi:10.3390/s16122161

Review of the Usefulness of Various Rotational Seismometers with Laboratory Results of Fibre-Optic Ones Tested for Engineering Applications

1
Faculty of Advanced Technologies and Chemistry, Military University of Technology, 2 gen. Sylwestra Kaliskiego St., Warsaw 00-908, Poland
2
m-Soft Ltd., 9-4 Sotta Sokoła St., Warsaw 02-790, Poland
3
Faculty of Civil Engineering and Architecture, Opole University of Technology, 48 Katowicka St., Opole 45-061, Poland
4
Department of Microelectronics and Computer Science, Lodz University of Technology, 221/223 Wólczańska St., Lodz 90-924, Poland
5
Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 11/12 Gabriela Narutowicza St., Gdansk 80-233, Poland
*
Author to whom correspondence should be addressed.
Academic Editors: Manuel Lopez-Amo, Jose Miguel Lopez-Higuera and Jose Luis Santos
Received: 9 October 2016 / Revised: 1 December 2016 / Accepted: 7 December 2016 / Published: 16 December 2016
(This article belongs to the Special Issue Optical Fiber Sensors 2016)
View Full-Text   |   Download PDF [10238 KB, uploaded 16 December 2016]   |  

Abstract

Starting with descriptions of rotational seismology, areas of interest and historical field measurements, the fundamental requirements for rotational seismometers for seismological and engineering application are formulated. On the above basis, a review of all existing rotational seismometers is presented with a description of the principles of their operation as well as possibilities to fulfill formulated requirements. This review includes mechanical, acoustical, electrochemical and optical devices and shows that the last of these types are the most promising. It is shown that optical rotational seismometer based on the ring-laser gyroscope concept is the best for seismological applications, whereas systems based on fiber-optic gyroscopes demonstrate parameters which are also required for engineering applications. Laboratory results of the Fibre-Optic System for Rotational Events & Phenomena Monitoring using a small 1-D shaking table modified to generate rotational excitations are presented. The harmonic and time-history tests demonstrate its usefulness for recording rotational motions with rates up to 0.25 rad/s. View Full-Text
Keywords: fibre-optic interferometric sensor; rotational seismometer; seismological investigation; strong motion seismology; earthquakes; shaking table fibre-optic interferometric sensor; rotational seismometer; seismological investigation; strong motion seismology; earthquakes; shaking table
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Jaroszewicz, L.R.; Kurzych, A.; Krajewski, Z.; Marć, P.; Kowalski, J.K.; Bobra, P.; Zembaty, Z.; Sakowicz, B.; Jankowski, R. Review of the Usefulness of Various Rotational Seismometers with Laboratory Results of Fibre-Optic Ones Tested for Engineering Applications. Sensors 2016, 16, 2161.

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